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One of the most important ways we connect with others is in person. That's why we're so excited about Google+ Hangouts, and why we launched a preview of the Hangouts API a few months ago. Today we're moving this API out of preview, and enabling developers to launch and share their hangout apps with the entire Google+ community!

Hangout apps are regular web apps, running in a big window inside the Hangout UI. In addition to using shared-state APIs to give users real-time interactivity, you also have access to built-in Hangout features, such as:

Initiate a group video chat with up to 10 people

Control hangout microphones, cameras, speakers and volume levels

Add sound effects and attach image overlays to faces

Set UI elements such as the video feed, chat pane, and notifications

It’s easy to get started: read the documentation, build and publish your app, and then let users know. You can easily get the word out in one of two ways: 1) post a link to it on Google+, and/or 2) add the new hangout button to your website. In either case, anyone who clicks will start a new hangout with your app running inside. It then appears in the “Recent” apps pane for future hangouts.

To get the ball rolling, we're introducing a new "Apps" pane in Google+ Hangouts, as well as some featured applications, including Aces Hangout, Cacoo, Scoot & Doodle, Slideshare, Clubhouse Challenge by Bravo, and Google Effects. We’re looking forward to seeing what you can dream up in the weeks and months ahead.